What is the measure of m<3
A. 58 degrees
B. 122 degrees
C. 116 degrees
D. 64 degrees​

Hello!

Angles in a triangle sum up to 180°, so:

180° = 58° + 58° + m∠3

Combine and subtract:

180° = 116° + m∠3

64° = m∠3

Thus, the answer is D.

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